Chrysanthemum plant named ‘Thera Red’

ABSTRACT

A new and distinct cultivar of  Chrysanthemum  plant named ‘Thera Red’, characterized by its upright, outwardly spreading and uniformly rounded plant habit; moderately vigorous growth habit; freely branching habit; dense and full plant habit; dark green-colored leaves; uniform and freely flowering habit; and relatively small decorative-type inflorescences with dark red-colored ray florets.

Botanical designation: Chrysanthemum×morifolium.

Cultivar denomination: ‘THERA RED’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Chrysanthemum plant, botanically known as Chrysanthemum×morifolium and hereinafter referred to by the name ‘Thera Red’.

The new Chrysanthemum plant is a product of a planned breeding program conducted by the Inventor in Oostnieuwkerke, Belgium. The objective of the breeding program is to create new uniformly mounding and freely flowering Chrysanthemum plants with unique and attractive ray floret coloration.

The new Chrysanthemum plant originated from a cross-pollination made by the Inventor in Oostnieuwkerke, Belgium in October, 2009 of Chrysanthemum×morifolium ‘Belgo Red’, not patented, as the female, or seed, parent with Chrysanthemum×morifolium ‘Tirona Red’, not patented. The new Chrysanthemum plant was discovered and selected by the Inventor as a flowering plant from within the progeny of the stated cross-pollination in a controlled greenhouse environment in Oostnieuwkerke, Belgium in September, 2010.

Asexual reproduction of the new Chrysanthemum plant by vegetative terminal cuttings was first conducted in a controlled greenhouse environment in Oostnieuwkerke, Belgium in January, 2011. Asexual reproduction by vegetative terminal cuttings has shown that the unique features of this new Chrysanthemum plant are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

Plants of the new Chrysanthemum have not been observed under all possible combinations of environmental conditions and cultural practices. The phenotype may vary somewhat with variations in environmental conditions such as temperature, daylength and light intensity, without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘Thera Red’. These characteristics in combination distinguish ‘Thera Red’ as a new and distinct Chrysanthemum plant:

-   -   1. Upright, outwardly spreading and uniformly rounded plant         habit; moderately vigorous growth habit.     -   2. Freely branching habit; dense and full plant habit.     -   3. Dark green-colored leaves.     -   4. Uniform and freely flowering habit.     -   5. Relatively small decorative-type inflorescences with dark         red-colored ray florets.

Plants of the new Chrysanthemum differ from the female parent, ‘Belgo Red’, in the following characteristics:

-   -   1. Plants of the new Chrysanthemum are more uniformly rounded         than and not as upright as plants of ‘Belgo Red’.     -   2. Plants of the new Chrysanthemum have larger leaves than         plants of ‘Belgo Red’.     -   3. Plants of the new Chrysanthemum have smaller inflorescences         than plants of ‘Belgo Red’.     -   4. Plants of the new Chrysanthemum and ‘Belgo Red’ differ in ray         floret color as inflorescences of plants of ‘Belgo Red’ have         pale red-colored ray florets.

Plants of the new Chrysanthemum differ from the male parent, ‘Tirona Red’, in the following characteristics:

-   -   1. Plants of the new Chrysanthemum are not as vigorous as plants         of ‘Tirona Red’.     -   2. Plants of the new Chrysanthemum have larger inflorescences         than plants of ‘Tirona Red’.     -   3. Plants of the new Chrysanthemum and ‘Tirona Red’ differ in         ray floret color as inflorescences of plants of ‘Tirona Red’         have faded red-colored ray florets.

Plants of the new Chrysanthemum can be compared to plants of Chrysanthemum×morifolium ‘Pavia Red’, disclosed in U.S. Plant Pat. No. 23,134. In side-by-side comparisons conducted in Oostnieuwkerke, Belgium, plants of the new Chrysanthemum differed from plants of ‘Pavia Red’ in the following characteristics:

-   -   1. Plants of the new Chrysanthemum were more compact than plants         of ‘Pavia Red’.     -   2. Leaves of plants of the new Chrysanthemum were smaller and         not as dark green in color as leaves of plants of ‘Pavia Red’.     -   3. Plants of the new Chrysanthemum and ‘Pavia Red’ differed in         ray floret color as inflorescences of plants of ‘Pavia Red’ had         red purple-colored ray florets.

BRIEF DESCRIPTION OF THE PHOTOGRAPH

The accompanying photograph illustrates the overall appearance of the new Chrysanthemum plant showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photograph may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Chrysanthemum plant.

The photograph comprises a side perspective view of a typical flowering plant of ‘Thera Red’ grown in a container.

DETAILED BOTANICAL DESCRIPTION

The aforementioned photograph and following observations and measurements describe plants grown in 19-cm containers in an outdoor nursery in Oostnieuwkerke, Belgium during the spring and summer and under cultural practices generally used in commercial Chrysanthemum production. During the production of the plants, day temperatures ranged from 18° C. to 21° C. and night temperatures ranged from 10° C. to 15° C. Plants were 20 weeks old when the photograph and description were taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 2005 Edition, except where general terms of ordinary dictionary significance are used.

-   Botanical classification: Chrysanthemum×morifolium ‘Thera Red’. -   Parentage:     -   -   Female, or seed, parent.—Chrysanthemum×morifolium ‘Belgo             Red’, not patented.         -   Male, or pollen, parent.—Chrysanthemum×morifolium ‘Tirona             Red’, not patented. -   Propagation:     -   -   Type.—Vegetative terminal cuttings.         -   Time to initiate roots, summer.—About 14 days at             temperatures about 20° C.         -   Time to initiate roots, winter.—About 20 days at             temperatures about 20° C.         -   Time to produce a rooted young plant, summer.—About 30 days             at temperatures about 20° C.         -   Time to produce a rooted young plant, winter.—About 40 days             at temperatures about 20° C.         -   Root description.—Fine, fibrous; typically light brown in             color, actual color of the roots dependent on substrate             composition, water quality, fertilizers, substrate             temperature and age of roots.         -   Rooting habit.—Freely branching; medium density. -   Plant description:     -   -   Appearance.—Perennial decorative-type Chrysanthemum; stems             upright and outwardly spreading giving a uniformly rounded             appearance to the plant; plants nearly spherical in overall,             shape; very freely branching habit, about 25 primary lateral             branches develop, each primary lateral branch with multiple             secondary branches; pinching enhances lateral branch             development; dense and full plant habit; moderately vigorous             growth habit.         -   Plant height.—About 35 cm.         -   Plant width.—About 50 cm.         -   Lateral branches.—Length: About 25 cm. Diameter: About 2 mm             to 3 mm. Internode length: About 1.5 cm. Strength: Strong,             flexible. Aspect: Upright to outwardly spreading. Texture:             Pubescent; longitudinally ridged. Luster: Matte. Color:             Close to 144A.         -   Leaves.—Arrangement: Alternate, simple. Length: About 2.5 cm             to 4.5 cm. Width: About 1.5 cm to 3 cm. Apex: Rounded to             cuspidate. Base: Attenuate. Margin: Palmately lobed and             serrate, sinuses between lateral lobes divergent to             parallel. Texture, upper and lower surfaces: Slightly             pubescent. Luster, upper and lower surfaces: Matte. Color:             Developing leaves, upper surface: Close to 139C. Developing             leaves, lower surface: Close to 137D. Fully expanded leaves,             upper surface: Close to N137C; venation, close to 148C.             Fully expanded leaves, lower surface: Close to 147B;             venation, close to 147B to 147C. Petioles: Length: About             1 cm. Diameter: About 2 mm. Texture, upper and lower             surfaces: Slightly pubescent and slightly rough. Luster,             upper and lower surfaces: Matte. Color, upper surface: Close             to 146C. Color, lower surface: Close to 146D. -   Inflorescence description:     -   -   Appearance.—Decorative-type inflorescence form;             inflorescences borne on terminals above foliar plane; disc             and ray florets arranged acropetally on a capitulum.         -   Fragrance.—Faintly fragrant, pungent.         -   Flowering time.—Under natural season conditions, plants             flower in early October in Belgium.         -   Postproduction longevity.—Inflorescences maintain good color             and substance for about five weeks on the plant grown in an             outdoor nursery; inflorescences persistent.         -   Quantity of inflorescences.—Freely flowering habit with             about 20 inflorescences developing per lateral branch with             numerous inflorescences developing per plant.         -   Inflorescence buds.—Height: About 4 mm. Diameter: About             7 mm. Shape: Globular. Texture: Smooth. Color: Close to 144A             and 137C.         -   Inflorescence size and shape.—Diameter: Relatively small,             about 2 cm. Depth (height): About 3.5 cm. Disc diameter:             About 1 mm. Shape: Circular; raised dome. Receptacle             diameter: About 3 mm. Receptacle height: About 2.5 mm to             3 mm. Receptacle texture: Smooth, glabrous. Receptacle             color: Close to 144B.         -   Ray florets.—Quantity and arrangement: About or more than             200 ray florets per inflorescence arranged in about ten             whorls. Length: About 7 mm to 10 mm. Width: About 4 mm.             Shape: Oval. Apex: Rounded. Base: Attenuate. Margin: Entire.             Aspect: Mostly flat. Texture, upper and lower surfaces:             Smooth, glabrous. Luster, upper and lower surfaces: Matte.             Color: When opening and fully opened, upper surface: Close             to 53A; color does not fade with development. When opening             and fully opened, lower surface: Close to 185B; color does             not fade with development.         -   Disc florets.—Quantity and arrangement: About 20 or less             disc florets per inflorescence and massed at the center of             the receptacle; disc florets inconspicuous. Length: About             3 mm. Diameter: About 0.5 mm to 1 mm. Shape: Tubular,             elongated; apices acute. Color, immature: Apex: Close to             144C. Mid-section: Close to 5B. Base: Close to 145D. Color,             mature: Apex: Close to 12A. Mid-section: Close to 12A. Base:             Close to 12A.         -   Phyllaries.—Quantity and arrangement: About 25 phyllaries             per inflorescence arranged in about two or three whorls.             Length: About 4 mm to 6 mm. Width: About 2 mm to 3 mm.             Shape: Ovate. Apex: Rounded. Base: Rounded to truncate.             Margin: Entire. Texture, upper and lower surfaces: Smooth,             glabrous. Luster, upper and lower surfaces: Matte. Color,             upper surface: Close to 137A. Color, lower surface: Close to             N137B.         -   Peduncles.—Length, terminal peduncle: About 4 cm. Length,             fourth peduncle: About 6 cm. Length, seventh peduncle: About             8 cm. Diameter: About 2 mm. Angle: About 30° from vertical.             Strength: Moderately strong. Texture: Slightly pubescent.             Luster: Matte. Color: Close to 146B.         -   Reproductive organs.—Androecium: None observed. Gynoecium:             None observed.         -   Seeds and fruit.—Seed and fruit production have not been             observed on plants of the new Chrysanthemum. -   Disease & pest resistance: Resistance to pathogens and pests common     to Chrysanthemum plants has not been observed on plants of the new     Chrysanthemum grown under commercial production conditions. -   Garden performance: Plants of the new Chrysanthemum have     demonstrated excellent garden performance and will tolerate     temperatures ranging from about 0° C. to about 45° C. 

It is claimed:
 1. A new and distinct Chrysanthemum plant named ‘Thera Red’ as illustrated and described. 